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MAP3249 Datasheet(PDF) 5 Page - MagnaChip Semiconductor.

Part No. MAP3249
Description  4-channel LED Driver for High Brightness LEDs
Download  19 Pages
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Manufacturer  MGCHIP [MagnaChip Semiconductor.]
Direct Link  http://www.magnachip.co.kr
Logo MGCHIP - MagnaChip Semiconductor.

MAP3249 Datasheet(HTML) 5 Page - MagnaChip Semiconductor.

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Confidential
Datasheet Version 1.2
Oct 8
th 2014
5
Electrical Characteristics
Unless noted, VVIN = 12V, CVIN = 1.0µF, and typical values are tested at TA = 25°C.
Parameter
Test Condition
Min
Typ
Max
Unit
General Input Output
VVIN
Input Voltage Range
8.5
28
V
IQ
Quiescent Current
Driving FBs at Min. setting with no load
4
10
mA
I
SD
Ground Pin Current in
Shutdown
VVIN = 12V, VEN = 0V
No Load Current on FB
40
µA
VEN
Logic Input Level on
EN pin
VEN_L : Logic Low
0.8
V
VEN_H : Logic High
2.2
REN
Pull-down resistor on EN pin
250
500
VUVLO
Under Voltage Lockout
Threshold Voltage on VIN pin
Stop threshold
6.5
7.0
V
Start threshold
7.5
8.2
Oscillator
fSW
Internal Oscillator
Frequency
RFSW=250 kΩ
180
200
220
kHz
RFSW=100 kΩ
425
500
575
Dmax
Max. Duty Cycle
85
90
%
Reference
VVLDO
LDO Voltage
VVIN ≥ 8.5V, 0mA ≤ ILDO ≤ 10mA
4.95
5.2
5.45
V
Protection
TSD
Thermal Shutdown
Temperature
Shutdown Temperature
150
°C
Hysteresis, ΔTSD
25
VOVP
Over-Voltage Threshold
on OVP pin
Rising Over-Voltage Limit on OVP pin
2.35
2.5
2.65
V
Hysteresis, ΔVOVP
0.1
VLED_SHORT
LED Short Protection
Threshold on FB pins
FB1 ~ FB4
8.5
V
tSCP
LED Short Protection Time
fSW=500kHz (Note 1, 2)
8.192
ms
VCS
Boost Over Current Protection
Threshold on CS pin
0.57
0.6
0.63
V
VOPEN
LED Open Protection
Threshold on FB pins
ILED=90mA
0.09
V
ILED=200mA
0.2
VSBDOPEN
SBD Open Protection
Threshold on OVP pin
0.1
V
LED Current Sink Regulator
VFB1~4
Min. FB1~FB4 Voltage
0.4
V
IFB
Current Accuracy
ILED=120mA
-2.5
+2.5
%
IFB_max
Current Sink Max. Current
VADIM=2.0V
200
mA
IFB_leakage
Current Sink Leakage Current
VPWM=0V, VFB=30V
5
uA
VADIM
ADIM Input Voltage Range
0.9
2.0
V
PWM Interface
fPWM
PWM Dimming Frequency
0.1
2.0
kHz
VPWM
Logic Input Level on
PWM pin
VPWM_L : Logic Low
0.8
V
VPWM_H : Logic High
2.2
tON_MIN
Min. On-Time (Note 1)
fSW=200kHz
7
us
RPWM
Pull-down Resistor on PWM pin
250
500
Boost MOSFET GATE Driver
VGATE
GATE Drive Voltage
VVIN ≥ 8.5V
4.95
5.2
5.45
V
ISOURCE
GATE Source Current
VVIN ≥ 8.5, VGATE = 0.9* VVLDO
35
mA
ISINK
GATE Sink Current
VVIN ≥ 8.5V, VGATE = 0.1* VVLDO
30
mA
tRISE
GATE Output Rising Time
GATE load : 10Ω / 1nF
0.1
0.5
us
tFALL
GATE Output Falling Time
GATE load : 10Ω / 1nF
0.1
0.5
us
Soft Start
tSS
Soft Start Time
fSW=200kHz (Note 1)
8.5
13.0
ms
Note 1: These parameters, although guaranteed by design, are not tested in mass production.
Note 2:
4096
1
×
=
fsw
tscp


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